Sewing-machine guide



(No Model.)

G. H. CURTIS. SEWING MACHINE GUIDE.'

No. 488,186A Patented Deo. 20, 1892.

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UNITED STATES PATENT OFFICE.

GEORGE H. CURTIS, OF NEW YORK, N. Y., ASSIGNOR TO THE SINGERMANUFACTURING COMPANY OF NEW JERSEY.

SEWING-MACHINE GUIDE.

SPECIFICATION forming part of Letters Patent No. 488,186, dated December20, 1892.

Application led January 29, 1892. Serial No. 419,661. (No model.)

vTo all whom it may concern,.-

Be it known that I, GEORGE H. CURTIS, a citizen of the United States,residing at New York, in the county ot' New York and State of New York,have invented certain new and useful Improvements in Sewing MachineGuides, of which the following is a specification, reference being hadtherein to the accompanying drawings.

My invention relatesto that class of guides adapted for directing workconsisting of two pieces of fabric which have been stitched togetherclose to their edges and then been attened out, to a two-needle sewingmachine which stitches down a stay or covering piece to cover andstrengthen the seam. The guide heretofore generally in use for doingthis class of work has consisted of a rib projecting slightly beneaththe bottom of the presser foot and adapted to enter the crease of theflattened out work and thereby guide it to the needles, but in thusperforming this work with a guide formed on the bottom of the presserfoot it was necessary to place the work up side down, guiding the staystrip beneath the same. Moreover the pressure of the presser-foot is sogreat' as to have a tendency to force the two pieces of joined materialslightly apart and thereby objectionably strain the seam first made. Iobviate these objections and provide a guide well adapted for thepurposes intended by providing the throat plate of the machine with asmall longitudinal rib, V- shaped in cross-section with its pointuppermost, the said rib being preferably formed of spring metal so thatit will yieldingly press upward against the underside of the work andenter the crease of the seam with an elastic action which will not havean injurious tendency to strain the seam.

In the accompanying drawings Figurel is a plan View of a throat plateprovided with my improved guide. Fig. 2 is a longitudinal section, andFig. 3 a transverse section of the same. Fig. 4 represents a smallsection of the work in connection with which my improved guide is to beused.

A denotes a throat plate for an ordinary two-needle machine, said throatplate being provided with feed openings a and with needle openings b.Between the said feed and needle openings is arranged a guide ciconsisting preferably of a narrow piece of steel, V-shaped incross-section, and slightly bent so as to normally spring upward asshown in Fig. 2. This spring guide is free at one end and is secured atits other to the throat plate by being passed through a hole in thelatter and riveted, or in any other suitable manner. The guide c is,when pressed against the throat plate by the work, partly received in asmall groove or recess d beneath it, if the pressure of the work besufficient to force it down entirely, but as the presser foot inconnection with which my improved guide is to be used is preferablyformed slightly hollow on its under side, the elastic or spring guidewill normally enter the crease between the two pieces of fabricconstituting the work with a yielding action, and will thus reliablyguide them to the needles of the sewing machine. Owing to the elasticityof the spring guide c the pressure thereof into the crease of the work,while it will always be sufficient to hold the work in proper position,will not be great enough to strain the seam first made and therebyinjure the Work.

Having thus described my invention I claim and desire to secure byLetters Patent:-

l. A sewing machine throat plate provided with a groove and with alongitudinal, vertically yielding, elastic guiding rib partly housed insaid groove, said rib being free at one end and being secured at itsother end to said plate.

2. The combination with the throat-plate A provided with the groove dand with feed openings a and needle openings b,of the verticallyyielding elastic guide or guiding rib c, partly housed in said grooveand secured `at' one end only to said throat-plate.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE H. CURTIS.

Witnesses:

JOHN J. SHAW, J. A. REID

